snmpd reports /proc/net/ipv6_route data format error.

Issue

• Following messages were logged on our customer's system.

Feb  3 15:27:34 server snmpd[24479]: /proc/net/ipv6_route data 
format error (5!=8), line ==|fe80000000000000021018fffeaef73c 80 0000000000000000000000000000000000000000000000000000 00000000 00000001 00000000
80200001       lo |

Feb  3 15:52:11 server snmpd[24479]: /proc/net/ipv6_route data 
format error (5!=8), line ==|fe80000000000000021018fffeaef73c 80 0000000000000000000000000000000000000000000000000000 00000000 00000001 00000000
80200001       lo |

• According to sosreport information, it is seen that format of /proc/net/ipv6_route was wrong. The second line is wrong.

• Excerpt from /proc/net/ipv6_route

<snip>

fe80000000000000021018fffeaef73c 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000001 00000000 80200001       lo
fe80000000000000021018fffeaef73c 80 0000000000000000000000000000000000000000000000000000 00000000 00000001 00000000 80200001       lo
fe80000000000000021018fffeaef73e 80 00000000000000000000000000000000 00 00000000000000000000000000000000 00000000 00000001 00000000 80200001       lo

<snip>

• The same phenomenon also occurred when it was collected by other tool. So, it looks that it is not an only timing issue.